241522721 has 4 divisors (see below), whose sum is σ = 263479344. Its totient is φ = 219566100.

The previous prime is 241522703. The next prime is 241522727. The reversal of 241522721 is 127225142.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 241522721 - 2⁶ = 241522657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (241522727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10978295 + ... + 10978316.

It is an arithmetic number, because the mean of its divisors is an integer number (65869836).

Almost surely, 2^241522721 is an apocalyptic number.

It is an amenable number.

241522721 is a deficient number, since it is larger than the sum of its proper divisors (21956623).

241522721 is a wasteful number, since it uses less digits than its factorization.

241522721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21956622.

The product of its digits is 2240, while the sum is 26.

The square root of 241522721 is about 15541.0012869184. The cubic root of 241522721 is about 622.7580225290.

Adding to 241522721 its reverse (127225142), we get a palindrome (368747863).

The spelling of 241522721 in words is "two hundred forty-one million, five hundred twenty-two thousand, seven hundred twenty-one".